24 lines
652 B
Python
24 lines
652 B
Python
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class Singleton(type):
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def __init__(cls, name, bases, dict):
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super(Singleton, cls).__init__(name, bases, dict)
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cls.instance = None
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def __call__(cls,*args,**kw):
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if cls.instance is None:
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cls.instance = super(Singleton, cls).\
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__call__(*args, **kw)
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return cls.instance
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# class Singleton():
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# instance = None
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# def __init__(self):
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# self.__class__.instance = self
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# def get_instance():
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# if self.__class__.instance == None:
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# raise RuntimeError('Server has not been initialized.')
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# else:
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# return self.__class__.instance
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